Carryover effects from environmental change in early life: An overlooked driver of the amphibian extinction crisis?

Autor: Lundsgaard NU; School of Biological Sciences, The University of Queensland, St Lucia, Australia., Hird C; School of Biological Sciences, The University of Queensland, St Lucia, Australia., Doody KA; School of Biological Sciences, The University of Queensland, St Lucia, Australia., Franklin CE; School of Biological Sciences, The University of Queensland, St Lucia, Australia., Cramp RL; School of Biological Sciences, The University of Queensland, St Lucia, Australia.
Jazyk: angličtina
Zdroj: Global change biology [Glob Chang Biol] 2023 Jul; Vol. 29 (14), pp. 3857-3868. Date of Electronic Publication: 2023 May 01.
DOI: 10.1111/gcb.16726
Abstrakt: Ecological carryover effects, or delayed effects of the environment on an organism's phenotype, are central predictors of individual fitness and a key issue in conservation biology. Climate change imposes increasingly variable environmental conditions that may be challenging to early life-history stages in animals with complex life histories, leading to detrimental physiological and fitness effects in later life. Yet, the latent nature of carryover effects, combined with the long temporal scales over which they can manifest, means that this phenomenon remains understudied and is often overlooked in short-term studies limited to single life-history stages. Herein, we review evidence for the physiological carryover effects induced by elevated ultraviolet radiation (UVR; 280-400 nm) as a potential contributor to recent amphibian population declines. UVR exposure causes a suite of molecular, cellular and physiological consequences known to underpin carryover effects in other taxa, but there is a lack of research linking embryonic and larval UVR exposures to fitness consequences post-metamorphosis in amphibians. We propose that the key impacts of UVR on disease-related amphibian declines are facilitated through carryover effects that bridge embryonic and larval UVR exposure with potential increased disease susceptibility post-metamorphosis. We conclude by identifying a practical direction for the study of ecological carryover effects in amphibians that could guide future ecological research in the broader field of conservation physiology. Only by addressing carryover effects can many of the mechanistic links between environmental change and population declines be elucidated.
(© 2023 John Wiley & Sons Ltd.)
Databáze: MEDLINE
Externí odkaz: